Alert archive / California / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 10, NWS Hanford, CA
NWS Hanford, CA issued this severe thunderstorm warning at Aug 1, 2000, 2:35 PM PDT for Mariposa County, Tuolumne County, California. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 1, 2000, 2:35 PM PDT (21:35 UTC)
- Expired
- Aug 1, 2000, 3:00 PM PDT
- In force
- 25 min
- Issued by
- NWS Hanford, CA
- Area
- Whole counties
Counties Mariposa County, CA, Tuolumne County, CA
The nearest sounding before it
Oakland, CA (KOAK), launched 12:00Z, 9.6 hours before the alert went out and 200 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 62 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1555 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS56 KHNX 012136 SVRFAT CAC043-109-012200- BULLETIN-EAS ACTIVATION REQUIRED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HANFORD CA 235 PM PDT TUE AUG 1 2000 THE NATIONAL WEATHER SERVICE IN HANFORD HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... TUOLUMNE COUNTY IN CENTRAL CALIFORNIA EASTERN MARIPOSA COUNTY IN CENTRAL CALIFORNIA * UNTIL 300 PM PDT * AT 230 PM PDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ALONG HIGHWAY 120 BETWEEN TUOLUMNE MEADOWS AND TIOGA PASS.... MOVING NORTHWEST AT 11 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... TENAYA LAKE BY 240 PM PDT. THIS IS A DANGEROUS STORM WITH VERY HEAVY RAIN...FREQUENT CLOUD TO GROUND LIGHTNING AND LARGE HAIL. HIGHWAY FLOODING IS POSSIBLE. ! IF YOU ARE CAUGHT OUTSIDE SEEK SHELTER. VEHICLES ARE GOOD PROTECTION FROM LIGHTNING. IF YOU CANNOT GET INDOORS...AVOID ISOLATED TALL OBJECTS SUCH AS TREES OR TELEPHONE POLES. CROUCH DOWN LOW ON THE BALLS OF YOUR FEET MAKING YOURSELF LESS OF A TARGET FROM LIGHTNING. N
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Hanford, CA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 1, 1:45 PM PDT, 50 minutes earlier.
Area forecast discussion, Aug 1, 1:45 PM PDT, 50 minutes before
INTERIOR CENTRAL CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA 145 PM PDT TUE AUG 01 2000 GREAT BASIN HIGH CONTINUES TO DOMINATE THE WEATHER WITH THE RIDGE AXIS ORIENTED EAST/WEST ACROSS NORTHERN CALIFORNINA THROUGH CENTRAL NEVADA AND UTAH. AN EAST TO SOUTHEAST MID AND UPPER FLOW PREVAILS OVER THE FORECAST AREA. VORTICITY CENTER NEAR 53N 138W IS FORECAST TO MOVE SOUTHEAST AND FORM A TROUGH OFF THE PACIFIC NORTHWEST COAST WEDNESDAY AND THURSDAY. AS THIS OCCURS, THE HIGH CENTER GETS PUSHED SOUTHEAST WHICH TURNS THE UPPER FLOW ACROSS THE FORECAST AREA SOUTHEAST TO SOUTH AND STARTS TO LOWER HEIGHTS. MAIN FORECAST CONCERN IS CONVECTION. MOISTURE AND INSTABILITY HAVE INCREASED ACROSS THE AREA THE PAST 24 HOURS. CONVECTION ALREADY FIRING OVER THE SIERRA NEVADA. MESOETA BRINGS A VORTICITY CENTER OVER THE SOUTHERN PORTION OF THE FORECAST AREA LATE TODAY AND TONIGHT ALONG WITH AN UPPER JET MAX. THESE ADDED DYNAMICS SHOULD ENHANCE THUNDERSTORM ACTIVITY. THE EAST TO SOUTHEAST FLOW ALOFT WILL KEEP THE THREAT OF STORMS OVER THE FOOTHILLS AS WELL AS THE SAN JOAQUIN VALLEY TONIGHT AND WEDNESDAY. 17Z EDW AND 12Z DRA RAOBS HAVE A VERY PRONOUNCED INVERTED V. ALTHOUGH PW VALUES ARE UP FROM YESTERDAY, THE POTENTIAL FOR A FEW DRY THUNDERSTORMS STILL EXISTS ALONG WITH GUSTY WINDS. MODEL RH CROSS SECTIONS CONTINUE TO SHOW BLOBS OF MOISTURE MOVING AROSS THE AREA THE NEXT COUPLE OF DAYS. A DRYING TREND IS FORECAST FOR THURSDAY AND CONVECTIVE PARAMETERS BECOME LESS FAVORABLE. WILL KEEP CHANCE POPS IN THE SIERRA THROUGH THE PERIOD BUT TAPER BACK THURSDAY. DESERT AREA IS LACKING OROGRAPHIC ENHANCEMENT AND WITH THE EASTERLY FLOW FEEL CHANCE OF CONVECTION THERE WILL BE LIMITED TO SLIGHT TONIGHT AND WEDNESDAY. ANOTHER WARM NIGHT TONIGHT AND HOT DAY TOMORROW WITH 850 AND 700 MB TEMPERATURES FORECAST TO CHANGE LITTLE. SLIGHT COOLING FORECAST THURSDAY AS THE GREAT BASIN HIGH GETS NUDGED SOUTHEAST. EXTENDED MODELS FORECAST A TROUGH TO DEVELOP ALONG THE WEST COAST BY THE WEEKEND RESULTING IN LOWER HEIGHTS AND THICKNESSES OVER THE AREA. WILL ADVERTISE A GRADUAL COOLING TREND WITH TEMPERATURES APPROACfHING NORMAL OVER THE WEEKEND. .HNX...NONE. FAT BH 077/105 076/103 072 97220 BFL BH 078/105 077/103 074 97220 YNP BB 066/099 065/097 060 97443 LINDQUIST N
The office that day
Everything else NWS Hanford, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 3:11 PM PDT | Severe Thunderstorm Warning | HNX | Mariposa | 44 min |
Nearby
Severe Thunderstorm Warnings in California, 2000Every severe thunderstorm warning in 2000
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.